MIT Media Lab invents personalized ambience for workspaces

August 24, 2018

Is your workplace hot or cold, noisy or quiet, well-lit or dim? Does it have a view of a city street or a more pastoral area; of other workspaces or a wall?

Most of us know that our immediate, individual work environment matters, because It can directly affect our moods, behavior, creativity, productivity, sleep, and health.

Now, Mediated Atmosphere, a project by the Responsive Environments Group at the MIT Media Lab, is attempting to improve both wellbeing and productivity in the workplace by enhancing the workplace atmosphere at an individual level. Using modular, real-time control infrastructure with biosignal sensors, controllable lighting, projection, and sound, Mediated Atmosphere is creating immersive environments designed to help users focus, de-stress, and work comfortably, the lab announced in mid-July.

With the boom of internet of things technologies over the last few years, then-master’s student Nan Zhao noticed that the many lighting solutions, wireless speakers, and home automation platforms on the market lacked a multimodal quality: They weren’t synchronizing light, sound, images, fragrances, and thermal control in a meaningful way.

 Also missing in most available smart home and office products is a basis in physiology—platforms that incorporate research on the impact of atmospheric scenes on cognition and behavior. For this project, Zhao drew on existing research showing the positive effects of natural views and sounds on mental state, as well as the effects of light and sound on mood, alertness, and memory.

In the course of this research, however, Zhao kept coming to the same conclusion: “It’s not one size fits all.” 

“People need a place that is fascinating, that gives them a feeling of being away, and is rich but predictable,” she says. “However, this place is different for different people. With our approach, we want to create a personalized experience.”

Comprising a frameless screen (designed with a special aspect ratio, so it doesn’t feel like watching TV), a custom lighting network, a speaker array, video projection, and both wearable and contact-free biosignal sensors, Mediated Atmosphere synchronizes and controls numerous modalities.

Zhao and her collaborators also developed a new approach for controlling the system: a control map that compresses a complex set of input parameters to a simplified map-like representation. The compass points of the map are abstract control dimensions, such as focus or restoration. That way, rather than worrying about light levels or sound sources, users can simply tell the system what they want based on how focused or relaxed they want to be. The biosignal sensor stream computes a focus and restoration indicator based on measures developed and evaluated by Zhao and her team. Using these indicators, Mediated Atmosphere can label what specific atmospheric scenes mean for the user, and learn how to automatically trigger changes based on a user’s actual responses and activities.

The smart office concept is designed to self-regulate on the basis of the user’s activities and physiology. Using biosignal sensors to track heart-rate variability and facial expressions, the prototype both responds to the user’s moods in real time and tracks responses. A user study published in Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies in June 2017 found that the Mediated Atmosphere smart office prototype had a positive effect on occupants’ perceptions and physiological responses.

“We imagine a workspace that, when asked, can instantly trade the engaging focus of a library with the liberating sensation of a stroll through the forest,” explains Zhao, the first author on the paper. “We want to create an environment player that can recommend or automate your space similar to how Spotify or Pandora gives you access to a world of music. We want to help people to manage their day by giving them the right place at the right time.”

The study of 29 users offered five different ambient scenes, ranging from forest streams to bustling coffee shops, measuring how the environment influenced participants’ ability to focus and restore from stress.

A second study with nine subjects and 33 scenes, published in Zhao’s thesis, looked at how well the user interface worked in applications where the choice of environments was driven by sensors.

In future iterations, Zhao hopes to give users the ability to record their own personal favorite places and upload them into the system, in addition to the built-in options.

Zhao is working with a number of industry experts to hone both the technology and the experiential effectiveness of Mediated Atmosphere. Most recently, member company Bose has been supporting the work and helping to take the prototype to the next level — the next iteration will be a modular system that can be installed in any existing workspace so Zhao’s team can conduct experiments on this technology in the wild.

Lee Zamir, director of the BOSEbuild team, is enthusiastic about Mediated Atmosphere’s potential to help redefine the workspace. “The Mediated Atmosphere project has the potential to improve and rethink the work environment,” he says. “We go to work, not just to make a living—but to be challenged, to accomplish, to focus, and to connect with others to achieve great things. When we are able to do this, when we have a ‘good day at work,’ it improves all the other parts of our lives. We carry that sense of purpose and progress from our workday with us.”

In addition to the next phase of research in office environments, Zhao also is creating a smaller, modular system that could be installed in any office or even in a home office. The team is exploring more sensory modality such as thermal control, air flow, and scent.

Research contact: nanzhao@media.mit.edu

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